<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>权限管理</el-breadcrumb-item>
            <el-breadcrumb-item>角色列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!--卡片视图-->
        <el-card>
        <!--添加角色按钮区域-->
            <el-row>
                <el-col>
                    <el-button type="primary" @click="adddialogVisible=true">添加角色</el-button>
                </el-col>
            </el-row>
        <!--角色列表区域-->
        <el-table :data="roleslist" border stripe>
        <!--展开列-->
        <el-table-column type="expand">
            <template slot-scope="scope">
            <el-row class="left" :class="['bdbottom' , i1===0 ? 'bdtop':'','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
                <!--渲染一级菜单-->
                <el-col :span="5">
                    <el-tag closable @close="removeRightById(scope.row,item1.id)">
                        {{item1.authName}}
                    </el-tag>
                    <i class="el-icon-caret-right"></i>
                </el-col>
                <!--渲染二三级菜单-->
                <el-col :span="19">
                    <!--通过for循环 嵌套渲染二级权限-->
                    <el-row :class="[i2===0 ? '':'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
                        <el-col :span="6">
                            <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                            <i class="el-icon-caret-right"></i>
                        </el-col>
                        <el-col :span="18">
                             <el-tag type="warning" v-for="(item3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">{{item3.authName}}</el-tag>
                        </el-col>
                    </el-row>
                </el-col>
            </el-row>
                
            </template>
        </el-table-column>
        <!--索引列-->
            <el-table-column label="#" type="index"></el-table-column>
            <el-table-column label="角色名称" prop="roleName"></el-table-column>
            <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
            <el-table-column label="操作" width="300px">
                <template slot-scope="scope">
                     <el-button size="mini" type="primary" icon="el-icon-edit" @click="showDialog(scope.row.id)">编辑</el-button>
                     <el-button size="mini" type="danger" icon="el-icon-delete" @click="removeById(scope.row.id)">删除</el-button>
                     <el-button size="mini" type="warning" icon="el-icon-setting" @click="showSetRightDialog(scope.row)">分配角色</el-button>
                </template>
            </el-table-column>
        </el-table>
        </el-card>

<!--编辑用户的对话框-->
        <el-dialog
  title="编辑"
  :visible.sync="dialogVisible"
  width="50%">
  <el-form :model="editForm" ref="editFormRef" label-width="70px">
  <el-form-item label="角色名称" >
    <el-input v-model="editForm.roleName" disabled></el-input>
  </el-form-item>
  <el-form-item label="角色描述" >
    <el-input v-model="editForm.roleDesc"></el-input>
  </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="dialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUserInfos">确 定</el-button>
  </span>
</el-dialog>

<!--添加用户的对话框-->
<el-dialog
  title="添加用户"
  :visible.sync="adddialogVisible"
  width="30%">
  <el-form :model="addForm" ref="addFormRef" label-width="70px">
  <el-form-item label="角色名称" prop="name">
    <el-input v-model="addForm.roleName"></el-input>
  </el-form-item>
  <el-form-item label="角色描述" prop="name">
    <el-input v-model="addForm.roleDesc"></el-input>
  </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="adddialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addUser">确 定</el-button>
  </span>
</el-dialog>

<!--分配角色的对话框-->
<el-dialog
  title="分配权限"
  :visible.sync="SetdialogVisible"
  width="30%" @close="SetRightDialogClose">
  <!--树形控件-->
  <el-tree :data="rightsList" :props="treeProps" show-checkbox node-key="id" 
  default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>

  <span slot="footer" class="dialog-footer">
    <el-button @click="SetdialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
</el-dialog>
    </div>
</template>
    


<script>
export default {
    data(){
        return{
            //所有角色列表数据
            roleslist:[],
            dialogVisible:false,
            adddialogVisible:false,
            SetdialogVisible:false,
            editForm:{},
            addForm:{
                roleName:'',
                roleDesc:''
            },
            //所有权限的数据
            rightsList:[],
            //树形控件的属性绑定对象
            treeProps:{
                label:'authName',
                children:'children'
            },
            //默认选中的节点Id值数组
            defKeys:[],
            //当前即将分配角色的id
            roleId:''
        }
    },
    created(){
        this.getRolesList()
    },
    methods:{
        //获取所有角色的列表
       async getRolesList(){
          const {data:res}= await this.$http.get('roles')
          if(res.meta.status!==200){
              return this.$message.error("获取角色列表失败")
          }
          this.roleslist=res.data;
        //   console.log(this.roleslist);
        },
        //根据Id删除对应的权限
        async removeRightById(role,rightId){
            //  弹框询问用户是否要删除
          const confirmResult= await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)

        if(confirmResult!=='confirm'){
            return this.$message.info('取消了删除！')
        }
        // console.log('确认了删除');
       const {data:res} =await this.$http.delete(`/roles/${role.id}/rights/${rightId}`)
        if(res.meta.status!==200){return this.$message.error('删除权限失败！')}
        // this.getRolesList()
        role.children=res.data
         },
        async removeById(id){
            const confirmResult= await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        //如果用户确认删除，则返回字符串 confirm
        //如果用户取消了删除，这返回字符串 cancel
        // console.log(confirmResult);
        // console.log(id);
        if(confirmResult!=='confirm'){
            return this.$message.error('已取消删除')
        }
        // console.log('确认了删除');
        const {data:res}=await this.$http.delete('roles/'+id)
        // console.log(res);
        if(res.meta.status!==200){
            return this.$message.error('删除失败!')
        }
        this.$message.success('删除成功！')
        this.getRolesList()
         },
        async showDialog(id){
             const {data:res}=await this.$http.get('roles/' + id)
             if(res.meta.status!==200){
                 return this.$message.error('修改用户失败')
             }
             this.editForm=res.data
             // console.log(id);
            this.dialogVisible=true
            
         },
        //  修改角色信息并提交
       editUserInfos(){
            this.$refs.editFormRef.validate(async valid=>{
                // console.log(valid);
                if(!valid)return
                // 发起角色修改信息的请求
               const {data:res}= await this.$http.put('roles/' + this.editForm.roleId,{
                    rolename:this.editForm.roleName,
                    roledesc:this.editForm.roleDesc
                })
                // console.log(this.editForm.roleId);
                // console.log(res.data);
                if(res.meta.status!==200){
                    return this.$message.error("修改角色信息失败！")
                    // console.log("ffff");
                }
                //关闭对话框
                this.dialogVisible=false
                //刷新数据列表
                this.getRolesList()
                //提示修改成功
                this.$message.success("修改角色信息成功！")
            })

        },
        addUser(){
            this.$refs.addFormRef.validate(async valid=>{
                // console.log(valid);
                if(!valid)return
              const {data:res} =await this.$http.post('roles/',this.addForm)
            //   console.log(res);
                if(res.meta.status!==200){
                 this.$message.error('添加角色信息失败')
                }
                //添加用户成功
                this.$message.success('添加角色成功')
                //关闭对话框
                this.adddialogVisible=false
                //刷新获取角色列表数据
                this.getRolesList()
            })
        },
        //展示分配权限的对话框
       async showSetRightDialog(role){
           this.roleId=role.id
            //获取所有权限的数据
            const {data:res}= await this.$http.get('rights/tree')
            if(res.meta.status!==200){
                this.$message.error('获取权限数据失败')
            }
            this.rightsList=res.data
            console.log(this.rightsList);

            //递归获取三级节点的Id
            this.getLeafKeys(role,this.defKeys)
            //显示分配角色的对话框
            this.SetdialogVisible=true
        },
        //通过递归的形式，获取角色下所有三级权限的id，并保存到 defKeys 数组中
        getLeafKeys(node,arr){
            if(!node.children){
                //如果当前 node 节点不包括 children 属性，则是三级节点
                return arr.push(node.id)
            }
            node.children.forEach(item=>this.getLeafKeys(item,arr))
        },
        //监听分配权限对话框的关闭事件
        SetRightDialogClose(){
            this.defKeys=[]
        },
        //点击为角色分配权限
       async allotRights(){
            const keys=[
                ...this.$refs.treeRef.getCheckedKeys(),
                ...this.$refs.treeRef.getHalfCheckedKeys()
            ]
            // console.log(keys);
            const idStr=keys.join(',')
            const {data:res}=await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
            if(res.meta.status!==200){
                return this.$message.error('分配权限失败！')
            }
            this.$message.success('分配角色成功！')
            this.getRolesList()
            this.SetdialogVisible=false
        }
    }
}
</script>

<style  scoped>
    .el-tag{
        margin: 7px;
    }
    .bdtop{
        border-top: 1px solid #eee;
    }
    .bdbottom{
        border-bottom: 1px solid #eee;

    }
    .left{
        margin-left: 50px; 
    }
    .vcenter{
        display: flex;
        align-items: center;
    }
</style>